Calculating-machine.



,3 SHEETS-SHEET I.

InQe'nibr:

F. J. TILLMAN.

CALCULATING MACHINE.

APPL|CAT |0N FILED MAYZM 1913- I 1 ,223,010, Pacented Apr. 17,1917.

IIE

Ifi'll'man, W 'His Ail or'neigs.

F. 1. HUMAN CALCULATING MACHINE. APPLICATION FILED MAY 21. 1913.

Patented Apr. 17, 1917.

3 SHEETS-SHEET 2.

' Inventor: FTJ. Hman,

' isAuornags.

F 1. TILLMANJ CALCULATING MACHINE.

3 SHEETS-SHEET 3.

APPLICATION HLED MAY 2h I913.

Patented Ap1'.17,l917.

as chine on line III-III, Fig. I.

UNITED STATES PATENT OFFICE.

FERDINAND J. TILLMAN, OF ST. LOUIS, MISSOURI, ASSIGNO 8 TO TYPEWRITING CALCU- LATINO ATTACHMENT COMPANY, OF ST. LOUIS, MISLOUBI, A CORPORATION OF mssonm.

To all whom it mag concern:

Be it known that I, FERDINAND'J. TILL- MAIN, a citizen of the United States of America, and a resident ofthe city of St. Louisand State of Missouri, have invented certain new and useful Improvements in Calculating-Machines, of which the following is a full, clear, andexact description, re erence being had to the accompanying drawings, forming a part of this specification. a My invention relates to a. calculating machine intended, more particularly, to be placed in operation by the numeral key levers of an ordinary typ'ewriting machine;

()ne of the objects of the present invention is to provide a, simple and efii'cient automatic locking mechanismffor the calculat- 1n Ob ect is'to provide the integer wheels of the machine with yielding teeth that initially engage the wheels cotiperable with the integer Wheels, whereby interference or clash between the cooperating teeth is avoided.-' The present invention also has for its object the improvement of several de-' tails of construction in a machine, of the kind herein referred to, as will be hereinafter pointed out.

Figure I is a top or plan view of my machine.

Fig. '11 is a, vertical longitudinal section taken on line IIII, Fi I. p

Fig. III is a vertical ongitudinal section taken'through the rear portion of the ma- I Fig. IV:is anenlarged view partly in elevation and partly in vertical section of one of the presser levers and the adjustable -me1nber carried thereby which receives engagement of the key levers.

Fig. V is anenlgged perspective view. ofone of the dogs, the integer wheels is controlled.

Fig VI is an enlarged perspective view of one of the detents associated with thedogs which control the integer Wheels. I

Fig. V'IIis a. perspective view of one of the Integer wheels and the cam lever for' imparting initial movement to said wheel.

1g. VIII is an enlargedsection' ofa portion of one of the inte r wheel's, showing in detail one of its yiel ing teeth.

Specification-of Letters Patent.

machine transmission shaft. Another y' which movement of .machlne surmounted by side members 2.

CALCULATING-MACHINE.

sion shaft locking mechanism.

Fig. XIII is an elevation of the presser levers o erable by the key levers and parts coiipera 1e therewith, the parts operable by one key lever being shown in normal positions and the p: arts operable by an adjoining key lever being shown in positions assumed when the last mentioned lever is depressed.

Fig. XIV is It perspective view of the collection of members by which the latch dog IX is a section taken on line- Patented Apr. 17, 1917. Application filed Kay 21, 1913. Serial'No. 76 3,082.

is released frc m the locking-dog of the transmission sh aft locking mechanism.

. My calculating machine being one intended, more articularly, to be placed in operation through the medium of the numeral key levers of a typewriting machine I will, without limiting myself to any particular means for render ng it operative, describe the m2 chine as operated by the numeral key levei's of any ordinary typewriting machine, as contemplated in'my U. S. P. tent No. 92 3,600, issued September 7, 1909.1 With this understanding I will first state that A designates the numeral key 1evers of a typevriting machine which is intended to be placed above my calculating machine, these key levers being provided with keys B and being of denominations from one to nine. 3

1 designates the base of my calculating which, with said base, form the frame of my machine. The frame thus formed preferably has attached to'it a top housing 3 by. which an inelo: ure for the calculatlng mecb anism is comp] ated.

4 designates a transverse rod surmounted in the side frame members 2, 5 are integer wheels loosely arrafi ed on said rod, their being nine of ti iese w eels responding to the numeral key levers A. The integer wheels 5 being equal to the number of the integer are provided with peripheral teeth that are wheels, the dogs being provided with rearadapted to be placed in mesh with wheels on wardly extendlng arms 19, having lateral a constantly rotating shaft, whereby said lips 20, which lie in the path of travel of .or other-stationary part of themachine.

arms 14 pivoted to said rod, a rod 15 conwheels will have partial rotation imparted stop pins 5, projecting from the sides of the to them in different degrees, each-. integer integer wheels, the engagement of said parts wheel being rotated a distance that causes providing for the-integer wheels being norit to impart to the transmission shaft a mally held from rotation. The dogs 18 are movement that is the equivalent of a series provided with forwardly extending tail of steps corresponding in number to the numerical value of the integer wheels. rod 15 carried by the arms 14, pivoted to p 6 designates the drive shaft and 7 the the-rod 13. The function of these tail arms Qwheels fixed thereto to which the peripheral will be hereinafter set forth. 23 are gravitateeth of the integer wheels areineved in tive detents, loosely arranged on the rod 13 order that the integer wheels may be par; alongside the dogs 18, each detent being nortially rotated during enga ement between" mally upheld by thearear arms of said dogs, their peripheral teeth. and t e drive wheels. 9 is a transmission shaft parallel with the the lips 20 of the dogs, so that while integer wheel supporting rod 4 and the drive, the stop -pins of the integer wheels are norshaft 6 and on which are rigidly mounted mally msabutmentag ainst the arms of the -a series of transmission wheels 8-. In the dogs the rear ends of said 'gravitative depresent machine all of the transmission tents lie, above said stop pins, but when the wheels 8 exceptthose operable by the .1 reararms of the dogs are lowered to permit and 2 integer wheels are operable by passage of the stop pins over the lips of said the peripheral teeth on the integer wheels arms, the stop pins ride beneath the gravitaarms 21, which lie beneath the transverse to a" degree corresponding to that to whichtive detents, after which the latter move said integer wheels are operated by ithe downwardly and occupy positions that will wheels on the drive shaft 6. The operacause the next succeeding stop pins on the tion of the transmission shaft by the integer integer wheels to come into engagement with wheels is in conformity to the degree of the dctent's, pending the return of the dogs operation of each integer wheel during en- 18 to their normal positions.

gagement of its peripheral teeth. The 1 The means utilized in the present machine and 2 integer wheels are caused to operate for impartin initial partial rotation to the the transmission shaft in a manner similar integer whee's 5 may be advantageously set to the operation of this member by the other forth at this point in the description. 25 integer wheels but they cooperate with are-cam levers arranged in series upon a ratchet wheels, to be hereinafter referred to, transverse rod; 26 situated in front of the instead of with transmission wheels 8. 4 integer wheels 5.

The transmission shaft 9. is provided at loosely mounted on the rod 26 and each cam one of its ends with a miter wheel 10 that lever is provided at its rear end with a meshes with a miter wheel 11 on a transmission shaft 12 leading to registering downwardly and rearwardly inclined cam mecha- 27, the top of each cam lever being formed nism (not shown). The parts just are quite similar, in general, to correspond- 27 terminates. The several cam levers 25, ing parts in my patent before mentioned, one for each individual integer wheel, are and reference may. be had to said patent for normally so heldby pull springs 29, cona more complete understanding of the opera necting their forward arms 30 to the frame tion of said parts, and-of a suitable connec "of the machine, as to hold the cam faces 27 tion between the registering mechanism and at the rear ends of the-cam levers against transmission shaft operable by the integer stop pins 5 on the integer wheels. The pull wheels.-- springs 29 are constantly under tension but 13 designates a transverse rod supported upward movement of the cam levers therein front of the series .of integer wheels 5, b cannot take place as long as rotation of this rod serving as a support for certain t e integer wheels is prevented by the dogs.

parts including a frame comprising side 18 inengagement with stop pins 5'. .When, however, a dog 18 is moved to free the stop necting the ends of. the arms, and a rod 16 pin previousl engaged by it the cam lever mounted in the arms-14 between the rods 13 25 corres on ingiin position'to said dog is and 15. The frame-comprising the-members permitte tocome into action to impart 1ni-' just mentioned is normally held in lowered tial rotation to the released integer wheel. position by one or more rings 17, see Figs.- The pull spring 29 of the proper ca'm lever I and'II, ponnectingsaifl frame to the base then acts to move the cam lever 25 up- 18 designates dogs loosely mounted on the against the stop pin of the integer wheel in transverse rod 13, the'number of these dogs engagement with 11;, occasions sufficient rb- Thesecam levers are escribed with an apex point 28 at whichthe cam face wardly, and as a result the cam 27 by riding tation of the integer wheel to cause a pe:

nicated from the integer wheel to the transripheral tooth thereon a) be brought into engagement with a wheel 7 on the drive,

shaft 6, following which ;the integer wheel is operated by saidshaft to a degree corresponding'to the integer represented by the integer wheel. Such movement is commumission shaft .9 and therefrom to the registering mechanism of the machine.

. feature inthe integer wheels of my present machine may best be described at {this time. I have discovered that when the initially operative peripheral teeth ofthe integerlwheels are made rigid members of,

the integer wheels, it frequently happens th t/these teeth, failing to come into proper mesh withthe teeth of the wheels they are moved to, become injured or broken owing "to improper engagement. To overcomethis, -I include in my integer wheels as foremost members of the groups of peripheral teeth thereon, spring controlled teeth 31 which are capable of yielding toward the axes of the.

integer wheels. These teeth are pivoted to the integer wheels and each tooth'is normally held in an outstanding position by a Spring See Fig 111, which permits inward movement of the tooth when pressure is exerted thereagainst; It will be understood that when the points of the teeth 31 are brought into engagement with the points of the teeth of either the wheels 7 or 8, the teeth'31 will yield backwardly until they use over the points of the teeth they have become engaged with and ride readily into their proper positions, to thereafter move in harmony without any clash or interference in the initial engagement between the teeth of the cooperating wheels.

The mechanism for operating the dogs 18 that control. the rotation of the integer wheels 5 will next be described. This mechanism is operable by the numeral key levers A and comprises a series 01' presser levers 32 located. beneath said key levers and loosely mounted upon a pivot rod 33. The levers 32 include long longitudinal arms extending rearwardly from the pivot rod 33 and upon the rear ends of these horizontal arms are sleeves 35 in which uprights 36 that receive the engagement of the key levers A are {it ted. In view of the .key bars A being arranged in different elevations in different makes of typewriting macl'lines, the numeral "key levers of which may be used to operate by pawls, pivoted to the sleeves 35, as shown in Fig. IV. Each presser lever 32 is provided with a rearwardly extending lower arm 34. l v v 39 designates pull levers loosely mounted the lovers I provide for vertical adjust ment of the uprights 36, this vertical adjustment being obtained by furnishing the uprights with teeth 37 which are engaged 'ner previously ex lltlll'lfi upon a transverse pivotrod 40 located at the rear of the transverse pivot rod 33, these pull levers being t rovided with arms extending backwardly from their axesand the ends of which ale seated immediately be health the horizon zal arms of the presser levers 32, the pull levers being normallyheld in contact with the presser levers 32 by springs 41. Each pull lever 39 has connected to it a pull rcc' 12 which extends rear-- wardly from the pull lever and is. attached to an arm 22 for! 'ling a part of the dog 18 that is operable by said lever upon the depression of the numeral ke lever A corresponding thereto. Upon t e depression of operable thereby, is depressed, causing the pull lever 39 to ho operated and the dog 18 to be so moved as to free the integer wheel corresponding thereto in order that said integer Wheel mai be operated in the man'- Means is provided in the present machine for preventing tie OPBIRUIOII of the remainder ofthe p: 'esser levers 32when one of them has been operated and until said lever has returnel to its normal position.

a numeral key lever A the presser lever 39 This means compr ises 'apair of rocker arms I 43 mounted on at ansverse pivot rod 40 adjacent its ends i1v which are mounted an upper connecting rod 44 and a lower stop rod When any pull lever 39 is operated it acts against the stop rod 45 and moves it forwardly from the position shown in Fig. II to the position shown in Fig. XIII, during which moveme at the rearwardly extending lower arm. 34 of the. operated presser lever 32 movesfrrwardly in front of the stop rod 4.5,and s: id slop rod becomes positioned, as seen in l ig. XIII, in front of the arms 34 of the our; peratedpresser levers 32,

thereby preventing movement of the last mentioned levers until the presser lever 32 which has been op zrated has returned to its normal position underth'e influence of the retracting spring 6 attached thereto.

I will next proceed to the description of the automatic locliing mechanism for con-' trolling the movement of the transmission shaft 9. 4K? designates a controller wheel fixed to tile transmission shaft 9. This wheel, as illustrate l in the drawings, is sup plied with peripheral teeth which need not )e herein considered, inasmuch as they are a foreign to the present invention. Projectmg, from one of t. 1e side facesof'tlie controller wheel are s1 aced lugs 48 arranged in a circular series. i9 is a-loekin dog pivoted at 51 to a post 5'2 located a ongs1de of the controller whee l. The locking dog 49 is located adjacent to the path of movement of the lugs 4 8 011tlecontrollerwheel and'is provided with a taoth 50 which normally rest between two i djoining lugs t8, see

m the Agar ugfiflserva te bp ds tooth of the dog between lugs of the controller wheel and to return the dog to'its normal position, after-it has been disengaged from the wheel in a manner to be subsequently explained.

55 designates a tappet pivoted at 56, intermediate its ends, to the post 52 and locatedimmediately above the locking dog 49. This tappet is provided with a tooth 57 which normally engages a tooth 54 on the locking dog 49 and is operable by pressure thereagainst t0 move the rear end of the locking dog downwardly when the tappet 55 is freed from holding means to be described. The tappet is operable by a spring 58, seeFig. IX. An upwardly extending arm55 of the tappet normally lies iii-engagement with a rotatable detent 59,

this detent being partially cut away so" that when it is partially rotated the tappet 55'is released. The rotatable detent 59 is fixed to a short shaft 60 extending through the post 52, and fixed to the opposite end of said shaft is a latch bolt barrel 61 in which is located a latch bolt 62 that is normally projected from the periphery of the barrel by a spring 63, see Fig. XI. The post 52 has at its side at which the latch bolt barrel 61 is located, an extension 52. provided with a vertical channel 52 into which the latch bolt barrel is made to fit by cutting out a curved portion of the adjacent wall of the extension, as seen at 52". This provision is made in order that the latch bolt 62 may engage a member operable in the channel 52 as about to be explained. The latch bolt barrel 61 and the rotatable detent 59 on the same shaft 60 are retained in their normal positions by a spring 64 connecting said detent to the post 52.

65 designates a release bar of L-shape utilized to impart partial rotation-to the shaft 60 for the purpose of disengaging the detent 59 from the tappet 55. This release bar is pivoted to the transverse rod 15 and has an arm movable ,vertically in the channel 52 in the post extension 52. The said arm' is provided near its lower end with a notch 66adapted to receive the latch bolt 62, as seen in full lines in'Fig. XI and dotted lines Fig. XII. When any dog tail arm 21 of said do neath'the transverse'ro being located be- 15, acts to elevate said rod and the frame of which it is a part,

whereby the release bar 63 is elevated. Upon this movement taking place the latch bolt 62 resting in the notch 66 in the release bar is moved upwardly in an arcuate path,

; whereby the barrel 61, the shaft 60, and the detent 59 are rotated to a sufficient degree to permit escape of the upper arm 55 of the from said detent, and subsequent actuation of the latch dog 49 by said tappet. The rearwardly extending arm of the tappet 55 is provided with an antifriction roller 67 18 is operated the.

coiiperable with the teeth of a ratchet wheel 68 fixed to the transmission shaft 9, this arrangement providing for the ratchet wheel imparting movement to the tappet, after the tappet has been released, in order that the tappet may be restored to its normal posi-' tion (shown in Fig. IX) where it will not interfere with the return of the locking dog 49 to normal position at the propermoment.

tinues its upward movement to release the latch bolt 62 from the walls of notch 66. The spring 64 finally returns the detent 59 to its normal position (Fig. IX) when the .ratchet 68 is actuated to' restore the tappet 55.

When the locking dog is operated by the tappet 55, to withdraw its tooth 50 from en gagement with the controller wheel, a stud 71 thereon is lowered into engagement with a hooked latch arm 69 carried by a suitably mounted pivot. rod 70 (see Fig. IX). The pivot rod 70 carrying the latch dog 69 also has fixed to it a trip arm 72 which extends upwardly and forwardly, the said trip arm being provided with a cam face 73 and having connected to it a pull spring 74 which tends to move'the parts 69 and 72 in a forward direction. r p

The latch device comprising the latch arm 69 is released from the locking dog 49 by mechanism about'to be described. 75 is a transverse shaft mounted in suitable bearings 76 on the base of the machine, this shaft having fixed to it at its ends, rearwardly extending arms 77 and 78, the arm 78 being located in front of the trip arm 72- and being provided with a finger 79 which engages the cam 73 of said trip arm. The arms 77 and 78 are connected by a pivot rod 80 which extends transversely of the entire series of cam levers 25 bywhich initial movement is imparted to the integer wheels 5. This shaft 80 has loosely mounted thereon a series of double armed lifting levers 81, the'rear arms of said levers resting normally upon tails 25 extending forwardly from the arms 30 of the cam levers 25 and the forward arms of said levers 81 rest upon the pivot rod 75, the last mentioned arms having ranged therein adjusting screws 82 by which the properly seat use of my machine the tail 25 all) and, as a consequence theshaft SO ahd the arms 77 and 78,. are elevated. When this action takes place the finger 79 carried by the arm 7 8 acts against the cam 73 on the trip arm 72 to move the trip arm and the latch dog 69 associatedtherewith in a rearwardly direction whereby the stud 71 on the locking dog 49 is permitted to escape from parts of this mechanism in sequence as follows.

v Upon the upward movement of the release bar 65 durlng upward movementof one of the dogs 18, and coincident operation oil. the corresponding cam lever 25, the ro tatablc detent 59 is partially rotated owing to the action of the released bar upon the latch. bolt (52. -The partial rotation of the detent permits operation of the tappet 55 by the spring 58, said spring being stronger than. spring 53, and said tappet acts to so move the locking dog 49 that its tooth 50 is withdrawn from a position between two of the lugs 41.8 on the controller wheel and the stud 71 on said locking dog is lowered suflieiently to become caught beneath the hook of the latcharm 69. These operations take place previous to the engagement of the released integer wheel 5 and the correspond;

ing wheel 8 on the transmission shaft 9, and,

as a result, when cooperation of these parts takes place the controller Wheel 4:7 is free to rotate instead of being held by the look ing (log 49. Previous to the completion of the desired movement of the transmission shaft 9 a pin 5 on the integer wheel that is in operation rides into contact with the top edge of the cam lever 25 which has been brought into service and moves toward the apex 28 of said cam lever. As said'pin approaches the apex of the cam lever it, acts to depress the rear end of saidlever and the tail 25 at the' forward end of the cam lever moved upwardly so that it acts against the rear arm of the lifting lever 81 thereahove and causes the shaft 80 and the arms 7 7 and 78 tobe elevated. As these upward movements take place the finger 7 9 extending rearwardly from the arm 78 rides in engagement with the cam 73 of the trip arm 72 and the latch dog 69 is thrown rearwardly to release the locking dog 49. The hacking dog-5L9 being thus freed is actuated by the spring 53 to replace its tooth 50 between two of the lugs 48. While the looking dog is returning to its normal position the pin 5 that acting to depress the cam lever moves downwardly from the. apex along the inclined cam face 27 of the cam lever and is brought to rest back of said. cam face so that it will be in position for the next subsequent initial operation of the integer wheel in the manner first explained with respect to the placing of the integer wheels in cooperation with' the driving wheels on the drive shaft 6..

The '1 integer wheel 5 and the 2 integer wheel 5 in th s machine do not, as previously mentioned, operate the transmission shaft .9 by the engagement of their peripheral teeth with Wleels 8 on said transmisslon shaft but, instead, their side pins engage ratchetgwherls on said transmission shaft. The ratchet wheel 68 is engaged by.

the side pins of ti e-l integer wheel, arranged singlyand the side pins of the 2 integer wheelarra nged in groups of two,

see Fig. III, engage a ratchet wheel 83,. see

Fig. III, fixed to the transmission shaft 9, said ratchet wheel in combination with the spring controlled pawl 84 serving also to prevent retrograde rotation of saidtransmission shaft.

his well, to her; recite that the integer wheels 5, aside from [the 1 and 2 integer wheels, have either difierent numbers of groups of peripheral teethior the groups spaced differently n11 the wheels; also that the teeth in each g1 oup correspond in num-' .ber to the numerhal value of the integer represented by the wheel, less one, to give the desired movem 511C, to the transmission shaft 9 following the initial step move ment. It isfurther tohe noted that the side pins 5 on said whet ls correspond in number to the number of groups of teeth and are spaced differently so that each pin will be accurately broug t 1' nto position of rest back of thecam face 27 of the cam lever 25 at the completion of move; lent ofthe integer wheel in operationof the transmission shaft 9. It should also be borne in mind that the operation of each integer wheel is independent of all other integer wheels and therefore the locations of the peripheral teeth and pins of said wheel does not in any way affect the operations of any integer wheel otherthan the one in operation.

Furthermore the (am levers 25 have noses of different shapes so that they will readily enter between the pins-5, even though said pins are close to ea 2h other as they necessarily are on the wileels of the smaller integers which bear a greater number of groups of peripheral teeth than the wheels of large integers; In this connection attention is directed to Fi gs. 5 and 6 of my earlier Patent No. 933,600, herein mentioned, the similar cams 53 being difl'erent as will be readily perceived.

To afford a clear u nderstanding of theoporation with respect to a given integer, I will set. forth the 0p :ration that takes place when the integer Whe e1. shown in Fig. II is in service this being he 6 integer wheel. The cam lever 25. here shown is similar to all the other cam levers 25, except as to contour topermit entrance between the pins 5, and is constantly. subject to the pull of the spring 29'connecting it to the frame of the machine. This being understood it will also be understood; that when the 6 integer wheel is released from the holding influence of the dog 18, in front of a stop pin 5 on said wheel, the spring '29 will act to move the cam lever 25. This movement of said.

cam lever causes the cam face 27 at the rear end of the lever-to ride in contact with a stop pin' 5 during upward movement of the rear end of the lever, whereby an initial one step partial rotation is imparted'to the integer wheel. This one step partial rotation of said wheel is sufi'icient to carry the first tooth of the group of peripheral teeth on the integer wheel, adjacent the alined driving W heel 7, upwardly into engagement with a tooth of said driving wheel. Said driving wheel is in constant rotation and immediately'a'cts to drive the integer wheel during engagement of the teeth in the group with the teeth of the driving wheel, the distance of six steps, and consequently, the transmission wheel 8 operated by said wheel is also moved a distance of six steps. nection the statement should be made that the first tooth in a group on the integer wheel acts to drive the transmission wheel two steps before it will clear the transmission wheel and each succeeding tooth drives it onestep. Ifhe movement of the 6 integer wheel is, naturally, discontinued when the last tooth of the group in service has become separated from the driving wheel 7 but this separation does not occur until a stop pin 5 on the integer wheel has reached the position of rest, seen in Fig. II, back of the cam face 27 ready to be impelled by the cam lever 25- upon the next release of the integer wheel in again placing the integer wheel and driving wheel in cooperation.

Each partial rotation of the 6 integer wheel by the cam lever 25 and driving wheel, in turn, is sufiicient 'to carry the stop pin 5 on the integer wheel next to the one previously engaged by a dog 18 into engagement -with said dog, and said dogbecomes serviceable to restrain said wheel from actuation by the cam lever 25,' pending movement of the dog, due toactuation of a corresponding key lever. 7

To afford a full understanding of the operation with respect to the 1 and 2 integer wheels it should be stated that the number of teeth on the ratchet wheels 68 and 83 correspond to the number of teeth on each transmission wheel 8. During a partial rotation of the 1 integer wheel by the cor responding cam lever 25 and driving wheel 7, in the same manner as described with respect to the 6 integer wheel, a stoppin 5 on said 1 integer wheel is caused to engage In this conmit of, their being engaged and operate a tooth of the ratchet wheel 68 and move said wheeland the transmission shaft 9 the dlstance of one step. Similarly, in the operation of the 2 integer wheel one of a pair of the twin stop pins 5 on said wheel first engages a tooth of the ratchet wheel 83' and moves .it one step and the second pin immediately thereafter engages the same tooth and moves the ratchet wheel an additional step, thus giving the desired two step movement.

When my calculating machine is used as an adjunct to a typewr iting machine, it is desirable to, at times,irender the calculating mechanism inoperible by the numeral key levers of the typewriting machine, e. when there is no demand for the use of the calculating machine. To render the calculating machine inoperative at such a time I provide means whereby the presser levers 32 and their uprights 36 are withdrawn from positions where they will be operable by the numeral key levers of the typewriting machine and which I'will now describe. The pivot rod 33 supporting the presser levers32 is rockably supported by a frame comprising said pivot rod and upright rocker bar-s85 in the upper ends of which said pivot rod is mounted. The rocker bars just mentioned are fixed to a transverse pivot rod 86 and when the presser levers 32 are in position to be operated by the key levers A, the rocker bars 85 are held upright by a spring 87 see Fig. II. 88 is adisconnect key the stem of which is vertically positioned in the main frame of the machine in front of the parts just described. The stem of this key is pivoted at 89 to the forward arm of a bell crank lever 90 which is supported by a transverse pivot rod 93. The bell crank lever 90 has a downwardly extending arm 9% which is pivoted to a lever 95 rockable upon a fulcrum 96 and connected by a link 97 to one of the rocker bars 85. When the disconnect key 88 is depressed it acts to operate the bell crank lever 90 whereby the latter acts upon the lever 95 and by throwing it rearwardly imparts movement to the connecting link 97, and the upper ends of said rocker bars are thrdvvn forwardly, carrying with them the pivot rod 33, the result being that the presser levers 32 are moved forwardly and downwardly so. that the uprights 36 carried thereby are withdrawn from positions that Cperb the numeral key levers A. The forward]; extending arm of the bell crank 90 operable by the disconnect key 88 has an inclined cam 91 at its lower edge that facesdownv wardly as seen in Fig. II, and extending baekwardly in said cam is a notch 92. The provision of the cam and notch upon and in the bell crank lever 90 is made for the reception of a detent device by which the bell crank lever, 90 is held from l'nove'ment after the disconnect key has beendepressed with the object in view of holding the presser levers 32 in their forwardly adjusted and inoperative positions.

transverse pivot rod in which is mounted a transverse catch rod 100 (see Figs. I and II). The/catch rod normally rests against the inclined cam 91 of the bell crank lever' vious result of maintaining the presser Ie-V vers 32 in their retractedpositions. Mounted on the rod 93 is a release key lever 103,

having a key 102' Upon operation of the release key Lever, which overlies the catch rod 100, said rod is thrown forwardly and downwardly so that the bell crank lever 90 is, released from the holding influence of {the catch rod 98. The springs 87 then act to return the rocker bars and the parts associated with said bars to their normal positions, whereby the presser levers 32 are again adjusted into their operative positions.

I claim: 1.In a calculating machine, an integer wheel, means for operating said integer wheel, a transmission shaft operable by said integer wheel, a stoprfor said transmission shaft, key controlled devices including means for releasing said stop, and means providing for the return of said'stop to its operative position at the completion of an operation of said integer whee 2. In a calculating machine, an integer wheel, means for operating said integer wheel, a transmission shaft operable by said integer wheel, a stop for said transmission shaft, key controlled devices including means for releasing said stop, and means controlled by said integer wheel providing for the return of said stop to its operative position at the completion of an operation of said integer wheel.

3. In a calculating machine, a series of integer wheels, means for operating said integer wheels, means for moving said integer wheels into cooperative relation with said operating means, a transmission shaft operable by said integer wheels, a locking device for stopping said transmission shaft, key coi'itrolled devices including means for releasing said locking device, and means controlled by said first mentioned integer wheel moving means providing for restoration of said locking device.

4. In a calculating machine, a series of I integer wheels, means for operating said in- The said detent de-' vice comprlses latch arms 98 fixed to a anova'ble into engagement with said stop wheel, key COIltTOllud members for releas ing said stop, from said stop' wheel, andstop holding device, vllld' a stopreleasing deteger wheels, cam levers for moving said integer whcelsfinto rotiperative relation with said operating mea: 1s, a transmission shaft operable by said it teger wheel's, a locking device for stopping said transmission shaft, 70 keycontrolled devices including means for I releasing said locking fllevice, and means controlled by said cun l isvers providing for restoration of said i jcki fiig device.

5. In a calculatirg faachine, a series of integer wheels, means for operating said. i'nteger wheels, a trai emission shaftoperable by said integer whet ls, a stop for said transmission shaft, key c )ntrolled devices includ' ing means fonreleanng said step, a spring tending to restore said stop, a latch for holding'said stop (luring the operation of said transmission sl aft, and a latch releasing member'operabla by said integer wheels at the completion of the operation of said Wheels. I

6. In a calculating 1 machine, a series of integer wheels, a transmission shaft operable by said integer wheels, a stop wheel coopera le with said traismission shaft,"a stop means, controlled ly said' integer wheels providing for the re .urn of said stop to said stop wheel when an operation of the trans mission shaft is completed. 7 V

7; In a cdlculating machine, a series of in teger wheels, a transmission shaft operable by said integer whe els, a stop wheel coiip erable with said transmission shaft, a stop I movable into engagement with said stop wheel, key controlled mechanism for releasing said stop from ;aid stop wheel, a stop holding device, and a stop releasing device including a series of members cooperablef with said integer wleels. 1 v

. 8. In a calculating machine, a series of integer wheels, a tran imission shaft operable, by said integer wheels, a stop wheel co6per- 1 0 a le with said transmission shaft, a stop] movable into engagement with said stop wheel, key controlled mechanism for re:- leasing said stop fr )m said stop wheel, a

vice including a series of independently adjustable members coiperable with said inte' ger wheels. 1 ,1

9. In a calculating machine, a series of integer wheels, a tr insmision shaft oper-' able by said integer wheels, a stop wheel cooperable with said transmission shaft, astop movable intoengagement with said stop wheel, means for disc ngaging said stop from said stop wheel, key controlled mechanism for releasing said disengaging means, a" spring tending to move said stop into' en gagement with said top wheel, a latch for holding said stop, and a latch releasing de vice operable by said integer wheels.

e 10. In a calculating machine, a series of teger wheels.

11. In a.calc ulating machine, a series of integer-wheels, a transmission shaft operable b said integer wheels, a stop wheel coiipera le with said transmission shaft, a stop movable into engagement with said stop wheel, means for disengaging said stop from said stop wheel, key controlled mechanism for releasing said disengaging means, a spring tending to move said stop into engagement. with said stop wheel, a latch for holding said stop, and a latch releasing de vice operable by said integer wheels; the said latch releasing device comprising a plurality of fingers, and finger operating means operable by said integer wheels. 12. In a calculating machine, a series of integer wheels, a transmission shaft operable by said integer wheels, a stop wheel cooperable with said transmission shaft, a sto P -movable into engagement with said stog wheel, means for disengaging said stop fromv said stop wheel, key controlled. mechanism for releasing said disengaging means, a spring tending to move said stop into engagement with said sto wheel, and a latch releasing device opera le by said integer wheels; the said latch releasing device including a rockable member and a plurality of fingers associated therewith, and means operable by said integer wheels for operat- :ing said fingers.

13. In a calculating machine, a series of integer wheels, a transmission shaft operable by said mteger wheels, a stop wheel coop'erable with said transmission shaft, 'a'

stop movable into engagement with said stop wheeha latch for holding said stop, a latch releasing device operable by said integer wheels, the said latch releasing device com- I rising a rockable member having a series of Independently adjustable fingers associatedtherewith, and means operable. by said integer wheels for operating said fingers.

1,4. In a calculating'machine, a series of integer wheels, a transmission shaft operable by said integer wheels, a stop wheel cooperable with said transmission shaft, a stop movable into engagement with said stop wheel, a spring actuated member tending to disengage said stop from said stop wheel, key controlled mechanism for releasin aid 'g er wheels; the said latch releasing device -fiiced, means for stopping said shaft after the integer wheels are disengaged from said said locking mechanism being movable in spring actuated member, a spring tending to move said stop into engagement with said stop wheel, a latch for holding said stop, and a latch releasing device operable by said intecomprising a rockable member and a plurality of independently adjustable fingers associated therewith, and cam levers operable by said integer wheels for operating said fingers. 15. In a calculating machine, a series of integer wheels having peripheral teeth, a series of transmission wheels adapted to mesh with said rows of peripheral teeth, a shaft to which said transmission wheels are transmission wheels, said means including a stop wheel operable by said transmission shaft, and a stop member adapted to interlock with said stop wheel, and key con trolled devices for disengaging said stop member from said stop wheel.

16. In a calculating machine, a series of integer wheels having peripheral teeth, a

series of transmission wheels adapted -to mesh with said rows of peripheral teeth, a

shaft to which said transmission wheels are fixed, means for stopping saidshaft after v the integer wheels are disengaged from said transmission wheels, said means 1neluding a stop wheel operable by said 'transmission shaft, a stop member adapted to interlock withsaid'stop'wheel, key controlled devices for disengaging said stop member from said. step wheel, and means controlled by said integer wheels for'restoring said stop member.

17. In a calculating machine, an integer wheel, integer 'wheel operating means, key

integer wheel, and locking mechanism for said transmission shaft cooperable with said means for controlhng sa d lnt'eger wheel;

response to movements of said integer wheel. I

19. In a calculatin ated members, a series of' integer wheels, means for operating said integer wheels, cam levers for movln said integer: wheels into coiperative relation with said operatin by said integer wheels, means for coking .said transmission shaftafter operation machine, key opermeans, a transmission shaft, operable here whereby said locking means is released wheel, integer whee thereof by said integer wheels, and means under control of said key operated memto'permit the operationof said transmission shaft. 7

20. In a calculatin machine, an integer wheel, integer wheel operating means,- a transmission shaft, means for imparting an initial movement to said integer wheel. to render it coiiperative with said operating means and transmission shaft, key actuated. means for controlling said integer wlzieel, and locking mechanismfor said transinission shaft coiiperable with said key actuated. means and also coiiperable with said means for imparting initial movement to said integer wheel.

21. In a calculating machine, an integer operating means, a transmission shaft, a spring actuated member for moving saidinteger wheel into ongagement with said operating means and said transmission shaft, key actuated means for controlling said integer wheel, and looking mechanism for said transmission shalt oooperable with said keyactuated means.

22. A calculating machine comprising keys, and calculating mechanism operable I in response to movements of said keys, said calculating mechanism including a stop wheel, a locking dog adapted to interlock with said stop whee, means for releasing said locking dog upon the operation oi a key, and means for automatically restoring sald locking do when a calculating opera tion is complete calculating machine comprising ..keys and calculating mechanism operable in response to movements of said keys, said calculating mechanism including a stop wheel provided with a series of stop teeth, a lockin 0g adapted to interlock with said. stop teet h, key controlled devices for withdrawing said locking ClOg from said step teeth upon the operation of any oi said kc s, and restoring devices for autinnatica y interlocking said locking dog ch said stop wheel when a calculating operation is completed.

, 24. A calculating machine comprising keys, and calculating mechanism operable in response to movements oi said keys; said calculatin mechanism including a toot sto whee a locking dog adapted to in v controlled devices for disengagin said loclc ing dog from said teeth, a latch "or holding said locking dog during the operation of the calculating mechanism, and means for automatically operating said latch and restoring the locking do when a calculating operat on is comp ete .25. A calculating machine comprising I keys, and calculating mechanism operable in with. a pin for eng response to moveme [its of said keys, said cal culating mechanisn. including a stop wheel, a locking dog adap' ed to interlock with'said stop wheel, means for releasing said look ing dog upon the o )eration of a key, a latch device for holding said locking dog during the operation of th: calculatingmechanism,

means for releasing; said latch device when a calculating operation is completed, and 2t spring for'moving Jitld locking dog into engagement with salt stop wheel.

typewriting machin a, said calculating mechanism including p1 esser members provided with vertically adji stable extensions adapted to be engaged ly the key levers of the typewriting machii e.

28. In a calculat ng machine, an integer wheel, integer wheel operating means, key. actuated means for controlling Said integer wheel, a transmissiinshaft adjacent to said integer wheel, a rat :het wheel on said train? mission shaft, said integer wheel being provided with means i 1: engagement with said ratchet wheel to im art a by step movement to said transn llSSlO'll shaft.

In a calculat'ng machine, an integer wheel, integer when operating means, key actuated means for controlling said integer wheel, a transmissir n shaft admcent to said integer wheel, a rat ahet wheel on said transmission shaft, said wheel being provided 9 with said ratchet wheel to impart pa al. rotation to said transmission shaft during only the period of engagement betveen said. pin and said wheel.

30. In a calculat ,chine, an integer wheel, means for ipelatiug said integer wheel, a transmissit u shaft operable by said integer wheel, a sti p for said transmission shaft, key controlled. devices including means for releasing said stop, and means cooperable with said integer wheel providing for the return of Szid stop to its operative i "ition at the completion of an operation. oi said integer whtel.

In a calculat'np; machine, a series of integer wheels, mains for operating said integer wheels, me: us for moving said integer wheels into ciiiperative relation with said operating Iileaus, a transmission shaft operable by said irteger wheels, a locking device for stopping said transmission shaft, key controlled devizes including means for ill (3 lil iii tion of said lockin I teger wheels, cam levers for moving said in-.

releasingsaid locking'device, and means coopei'ableiwith said first mentioned, integer wheel moving means providing for restoradevice.

32'. In acalculating machine, a series of integer wheels, means for operating said integer wheels into cooperative relation with said operating means, a transmission shaft operable by said integer. wheels, a locking device for stopping said transmission shaft, key controlled devices including means for releasing said locking device, and'means cooperable with said cam levers providing for restoration of said lockingdevice.

33. In a calculating machine, a series of integer wheels, means for operating said mteger 'wheels a transmission shaft. operable by said integer wheels, a stop for said transmission shaft, key controlled devices including means for releasing said stop, aspring tending to restore said stop, a latch for holding said stop during the operation of said I transmission shaft, and 'a latch releasing member cooperable with said integer wheels at the completion; of the operation of said wheels.

34. In a calculating machine, a series of -integerwheels, able by said integer wheels, a stop wheel cooperable with said transmission shaft, a stop movable into engagement with said stop wheel, key controlle members for releasing said stop from said stop wheel, and means, cooperable with said integer wheels, providing for the return of said stop to said stop wheel when an operation of the transmission shaft is completed.

35. In a calculating machine, a series of integer wheels, a transmission shaft operable by said integer wheels, a sto wheel cooperable with said transmission s aft, a stop movable-into engagement with said stop wheel, means for disengagin saidstop from said stop wheel, key contro led mechanism for releasing said disengaging means, a spring tending to move said stop into enga ment with said stop wheel, a latch for ho ding said stop, and a latch releasing device cooperable with said integer wheels.

36. In a calculating machine, a series of integer wheels, a transmission shaft oper-' able by said integer wheels, a stop wheel 00.-

. operable with said transmission shaft, 1 stop movable into engagement with said stop wheel, spring actuated means tending to disengage said stop from said stop wheel, key controlled mechanism for releasing said spring actuated means, a spring tending to move said stop into engagement with said stop wheel, a latch for holding said stop, and a latch releasing device cooperable with said integer wheels.

37 In .a calculatingfmachina-a series of a transmission shaft oper-' integer wheels,- able-by said integer wheels, a stop wheel cooperablewith said transmission shaft, a stop movable into en agement with-'1 said stop wheel, means for isengaging said stop from said stop wheel, key controlled mechanism for releasing said disenga ing means, a spring tending to.move sai stop into'en- 'ga em'ent-with said stop wheel, a latch for ho ding said stop, r-vice operableby said integer wheels; the said latch releasing device vcomprising a plua transmission shaft oper 6b and a latch releasing de- I rality of fingers, and finger operating means cooperable with said integer wheels.

38. In a calculating machine, a series of integer wheels, a transmission shaft operable by said integer wheels, a stop wheel cooperable with said transmission shaft,a stop movable into en agement' with said stop wheel, means for isengaging said stop from said stop wheel, key controlled mechanism for releasing said diseng 'ng means, a spring tending .to move sai stop. into engagement with said sto wheel, anda latch releasing'device 'opera le bysaid integer wheels; .the said latch releasing device including a rockable member and a plurality of fingers associated therewith, and means cooperable with said integer wheels for operating said finers.

39. 'In a ca culating machine, a series of integer wheels, a transmission shaft operable by said integer wheels, :1 stop wheel cooperable with said transmission shaft, astop movable into engagement with said stop releasing device operable by said integer wheels, the said latch releasing device comprising a rockable member having a series of independently adjustable fingers associated therewith, and means cooperative with wheel, a latch for holding said stop, a latch said integer wheels for operating said fingers.

40.111 a calculating machine, a series of integer wheels, a transmission shaft operable by said integer wheels, a stop wheel cooperable with said transmission shaft, a stop movable into engagement with, said stop wheel, a spring actuated member tending to,

associated therewith, and cam levers cotiperable with said integer wheels for operating said fingers.

41. In a calculating machine, a series of integer wheels having peripheral teeth, a series of transmission wheels. adapted to mesh with said rows of peripheral teeth, a shaft t0 which said. transmission Wheels are fixed, means for stopping said. shaft after the-integer wheels are disengaged from. said trmsmission wheels, said. means including a stop Wheel operable by said transmisslon shaft, a stop membei' adapted to interlock with said stop wheel, key centrolled devices for disengaging said stop mer nbel from said step wheels, and me ms coiipei'able withsaid 19 I integer wheels for r astoring said step memher.

I FERDINAND J. TILLMAN. In the-firesence 01 A." J. McOAUmY,

E. B. LINN. 

